Hide specific product from shop and specific category

add_action( ‘pre_get_posts’, ‘hide_specific_products’ ); function hide_specific_products( $query ) { if ( ! is_admin() && $query->is_main_query() && ( is_shop() || is_product_category( ‘shoes’ ) ) ) { $excluded_products = array( 123, 456, 789 ); $query->set( ‘post__not_in’, $excluded_products ); } }